Patent · US Expired

Method and apparatus for improving the voltage quality of secondary power supply unit

US6348778B1 · kind B1 · utility

5Cited by

6References

13Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Michael Weinhold · Erlangen, DE
Rainer Zurowski · Forchheim, DE
Leon Voss · Erlangen, DE

Key dates

Filing date	Feb 28, 2000
Grant date	Feb 19, 2002
Priority date	—
Expiry date	Feb 28, 2020

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E40/30
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method and an apparatus for improving the voltage quality of a secondary power supply unit uses a compensation device with a pulse-controlled power converter which is connected serially to a transmission line through the use of a coupling transformer. Positive and negative phase-sequence system deviations are determined and a basic transmission ratio space-vector is generated from them. Control signals for a pulse-controlled power converter are generated from the basic transmission ratio space-vector through the use of the link voltage of the pulse-controlled power converter. As a result, a compensator voltage is connected serially into the transmission line. A power system voltage of an ideal power supply system is thus generated for a secondary power supply unit from a distorted power system voltage.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.